Eye-popping photos show Bolton stroking under one shark's chin and high-fiving the nose of another.

The underwater cinematographer says he wants to pass on his sea of knowledge about sharks and ocean conservation to others.

"I once had a tiger shark eat my spear gun and he shoved me out of the water hitting me three times before I was able to get him off me - then I was OK," he said.

"But they are not mindless killers and humans are not on their menu.

"Yes, attacks sometime happen but 99 per cent are by mistaken identity like a surfer on a surfboard that looks like a seal or turtle.

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Mike and Becky Bolton, who have been married for 45 yearsCredit: mediadrumimages/Mike Bolton/@silenthunter_pty

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Bolton has been getting close with killer sharks for more than 60 yearsCredit: mediadrumimages/Mike Bolton/@silenthunter_pty

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He says tiger sharks can be misunderstoodCredit: mediadrumimages/Christian Torres

"Or swimmers splashing in murky water where their limbs are mistaken as being fish."

When asked about the danger and risk, he said: "I concentrate my mind to realize what I am about to do and all the things that could go wrong and to understand in the back of my mind how I should react.

"Even then there are just so many things a shark diver is not prepared for that can happen.

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Bolton has been diving since he was 17Credit: mediadrumimages/Mike Bolton/@silenthunter_pty